Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5176053 | Cutting tool equipped with a state indicator | Birger Alvelid | 1993-01-05 |
| 4945770 | State transducers in combination with mechanical components | Birger Alvelid | 1990-08-07 |